<template>
  <nav-bar>
    <div slot="left" @click="backClick" class="back">
      <img src="@/assets/img/common/back.svg" alt="">
    </div>
    <div slot="center" class="title">
      <div  class="title-item"
            v-for="(item, index) in titles"
            :class="{active: index === currentIndex}"
            @click="itemClick(index)">{{item}}</div>
    </div>
  </nav-bar>
</template>

<script>
import NavBar from "@/components/common/navbar/NavBar";

export default {
  name: "DetailNavBar",
  components:{
    NavBar,
  },
  data(){
    return{
      titles:['商品','参数','评论','推荐'],
      currentIndex: 0 ,
    }
  },
  methods:{
    itemClick(index){
      this.currentIndex = index
      this.$emit('titleClick',index)
    },
    backClick(){
      this.$router.back()
    },
  }
}
</script>

<style scoped>
.title{
  display: flex;
  font-size: 13px;
}
.title-item{
  flex: 1;

}
.active{
  color: var(--color-high-text);
}
.back img{
  margin-top: 10px;
}
</style>
